Longfian AY-1000P is a portable pulse oxygen concentrator for patient oxygen therapy. It can be used for oxygen therapy in patients with chronic asthma, pneumonia, or chronic obstructive pulmonary disease (COPD) Many travelers who require oxygen therapy can easily travel with a portable pulse oxygen concentrator. And those involved in active activities such as hiking, camping, and cycling can take oxygen with this portable pulse oxygen concentrator if they need oxygen therapy. Moreover, it is very necessary to keep pregnant and elderly healthy. 93%±3% High Oxygen Purityঃ Delivers concentrated medical-grade oxygen for dependable oxygen therapy support. Portable Pulse Oxygen Delivery: Pulse flow technology supplies oxygen during inhalation to improve oxygen and battery performance. Adjustable Flow Setting Control: Easy control buttons ...